/*---------------------------------------------------------------------------*
  Project:  NitroSDK - GX - demos - UnitTours/2D_Oam_4
  File:     main.c

  Copyright 2003,2004 Nintendo.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Log: main.c,v $
  Revision 1.28  2004/11/02 09:35:47  takano_makoto
  fix typo.

  Revision 1.27  2004/05/24 10:30:51  takano_makoto
  fixed autotest code

  Revision 1.26  2004/04/07 01:23:27  yada
  fixed header comment

  Revision 1.25  2004/04/06 12:48:06  yada
  fixed header comment

  Revision 1.24  2004/02/24 05:25:21  yasu
  used OS_EnableIrqMask instead of OS_SetIrqMask

  Revision 1.23  2004/02/12 09:33:51  nishida_kenji
  GXOamColor->GXOamColorMode.

  Revision 1.22  2004/02/09 01:44:47  kitani_toshikazu
  added default setting codes for auto testing.

  Revision 1.21  2004/02/05 07:09:02  yasu
  changed SDK prefix iris -> nitro

  Revision 1.20  2004/02/05 01:15:24  kitani_toshikazu
  Added codes for autoTesting.

  Revision 1.19  2004/01/19 02:15:56  nishida_kenji
  fixed comments

  Revision 1.18  2004/01/18 09:20:26  nishida_kenji
  added DEMOStartDisplay

  Revision 1.17  2004/01/18 07:33:33  nishida_kenji
  changed the place of SVC_WaitVBlankIntr

  Revision 1.16  2004/01/14 11:24:30  nishida_kenji
  added G2_OBJMosaic,
  removed GXOamMosaic

  Revision 1.15  2004/01/13 08:27:24  nishida_kenji
  simplification

  Revision 1.14  2004/01/09 12:02:34  nishida_kenji
  used OS_SetIrqCheckFlag at VBlankIntr()

  Revision 1.13  2004/01/07 09:38:05  nishida_kenji
  revised comments

  Revision 1.12  2003/12/25 11:00:09  nishida_kenji
  converted by GX_APIChangeFrom031212-2.pl

  Revision 1.11  2003/12/17 12:21:36  nishida_kenji
  used DC_FlushRange

  Revision 1.10  2003/12/17 09:00:20  nishida_kenji
  Totally revised APIs.
  build/buildtools/GX_APIChangeFrom031212.pl would help you change your program to some extent.
  $NoKeywords: $
 *---------------------------------------------------------------------------*/
//---------------------------------------------------------------------------
// A sample that flips OBJs:
//
// USAGE:
//   A: Flips horizontally
//   B: Flips vertically
//
// HOWTO:
// 1. Set up the character/palette/attribute data same as 2D_Oam_1.
// 2. Flip horizontally/vertically by setting corresponding fields.
//---------------------------------------------------------------------------
#include <nitro.h>
#include "DEMO.h"
#include "data.h"

static GXOamAttr sOamBak[128];                             // Buffer for OAM

void NitroMain(void)
{
    int flip_H = 0, flip_V = 0;

    //---------------------------------------------------------------------------
    // Initialize:
    // They enable IRQ interrupts, initialize VRAM, and make OBJ visible.
    //---------------------------------------------------------------------------
    DEMOInitCommon();
    DEMOInitVRAM();
    DEMOInitDisplayOBJOnly();

    //---------------------------------------------------------------------------
    // Transmitting the character data and the palette data
    //---------------------------------------------------------------------------
    GX_LoadOBJ(d_64_256_obj_schDT, 0, sizeof(d_64_256_obj_schDT));
    GX_LoadOBJPltt(d_64_256_obj_sclDT, 0, sizeof(d_64_256_obj_sclDT));

    MI_DmaFill32(3, sOamBak, 192, sizeof(sOamBak));        // let out of the screen if not display
    
    G2_SetOBJAttr(&sOamBak[0],                             // a pointer to the attributes
                  0,                                       // x
                  0,                                       // y
                  0,                                       // priority
                  GX_OAM_MODE_NORMAL,                      // OBJ mode
                  FALSE,                                   // mosaic
                  GX_OAM_EFFECT_NONE,                      // flip/affine/no display/affine(double)
                  GX_OAM_SHAPE_64x64,                      // size and shape
                  GX_OAM_COLORMODE_256,                    // OBJ character data are in 256-color format
                  0,                                       // character name
                  0,                                       // color param
                  0                                        // affine param
                  );

    DEMOStartDisplay();
    //---------------------------------------------------------------------------
    // Main Loop
    //---------------------------------------------------------------------------
    while (1)
    {
        DEMOReadKey();

        if (DEMO_IS_TRIG(PAD_BUTTON_A))
        {
            ++flip_H;
            flip_H %= 2;
        }
        if (DEMO_IS_TRIG(PAD_BUTTON_B))
        {
            ++flip_V;
            flip_V %= 2;
        }

        {
            GXOamEffect effect = (GXOamEffect)0;
            if (flip_H)
                effect |= GX_OAM_EFFECT_FLIP_H;
            if (flip_V)
                effect |= GX_OAM_EFFECT_FLIP_V;

            #ifdef SDK_AUTOTEST
            effect = (GXOamEffect)(GX_OAM_EFFECT_FLIP_H | GX_OAM_EFFECT_FLIP_V);// default params for testing.
            #endif //SDK_AUTOTEST
            
            
            //---------------------------------------------------------------------------
            // G2_SetOBJEffect:
            // it gives effects such as flip/scale and rotation.
            //---------------------------------------------------------------------------
            G2_SetOBJEffect(&sOamBak[0],
                            effect,
                            0                    // select affine params if GX_OAM_EFFECT_AFFINE or GX_OAM_EFFECT_AFFINE_DOUBLE selected
                            );
        }

        // Store the data in the main memory, and invalidate the cache.
        DC_FlushRange(sOamBak, sizeof(sOamBak));
        
        #ifdef SDK_AUTOTEST
        GX_SetBankForLCDC( GX_VRAM_LCDC_C );
        EXT_TestSetVRAMForScreenShot( GX_VRAM_LCDC_C );
        EXT_TestScreenShot( 100, 0x9975CFB4 );
        EXT_TestTickCounter();
        #endif //SDK_AUTOTEST
        
        SVC_WaitVBlankIntr();                              // Waiting for the end of V-Blank interrupt

        GX_LoadOAM(sOamBak, 0, sizeof(sOamBak));
    }
}

//---------------------------------------------------------------------------
// V-Blank interrupt function:
//
// Interrupt handlers are registered on the interrupt table by OS_SetIRQFunction.
// OS_EnableIrqMask selects IRQ interrupts to enable, and
// OS_EnableIrq enables IRQ interrupts.
// Notice that you have to call 'OS_SetIrqCheckFlag' to check a V-Blank interrupt.
//---------------------------------------------------------------------------
void VBlankIntr(void)
{
    OS_SetIrqCheckFlag( OS_IE_V_BLANK );                   // checking V-Blank interrupt
}
